099723 Concrete Sealer.pdf

Huron-Manistee NF Cadillac-Manistee Fire Operations Center 6/29/2023

CONCRETE SEALERS 099723 - 1

SECTION 099723 - CONCRETE SEALERS

PART 1 GENERAL

1.1 SUMMARY

A. This Section specifies an applied sealer for horizontal cast-in-place concrete surfaces.

B. Related Sections: Refer to the following specification sections for coordination.

1. Section 033000 - Cast-In-Place Concrete.

1.2 SUBMITTALS

A. Product Data: Submit manufacturer's product data and installation instructions.

B Mock-Up: Prepare a test area minimum 2 by 2 feet in size to verify suitability of the sealer and final appearance.

1.3 QUALITY ASSURANCE

A. Manufacturer: Minimum 10 years experience producing concrete coatings.

B. Installer: Licensed installers experienced and trained in the use of specified products.

C. Suitability of Substrate: Concrete surface must be clean and dry with all stains, oil, grease, dust, and dirt removed prior to application. A thorough pressure washing is highly recommended.

D. Regulatory Requirements: Comply with requirements of authorities having jurisdiction and applicable codes at the location of the project.

1.4 DELIVERY, STORAGE AND HANDLING

A. Deliver materials and products in unopened factory labeled packages. Protect from damage.

B. Store in a safe place, out of direct sunlight. Keep containers tightly sealed. Do not allow product to freeze. Use within manufacturer’s recommended shelf life, approximately 12 months.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Basis-of-Design Concrete Sealer: High-performance, non-yellowing, clear acrylic-based sealer by Concrete Coatings Inc., GEMCOTE™ or an approved equal product.

Huron-Manistee NF Cadillac-Manistee Fire Operations Center 6/29/2023

CONCRETE SEALERS 099723 - 2

Provide the following:

1. Sealer with Gloss Finish: CCI GemKote 100, with 100 g/L VOC.

2. Performance: Concrete sealers shall meet or exceed the following:

a. Coverage: As recommended by manufacturer.

b. Moisture Retention, Test ASTM C 309: 0.21 kg/m² at 200 ft² per gallon and

0.32 kg/m² at 300 ft² per gallon.

c. Gasoline Resistance: Slight dulling after15-minute exposure (ponding).

d. Tg: 50°C.

e. Tukon Hardness: 30 minutes at 180°F, 9.3; 30 minutes at 300°F, 13.7.

f. Pencil Hardness: 30 minutes at 180°F, F; 30 minutes at 300°F, H.

g. Spray Conditions, Viscosity: 19 seconds, No. 2 Zhan cup.

h. Abrasion Resistance: 160 mg lost, CS-17 wheel, 1000 g load, 1000 cycles

PART 3 - EXECUTION

3.1 PREPARATION

A. Inspection: Prior to start of application, inspect existing conditions to ensure surfaces are suitable for installation including the following:

1. Concrete has cured for a minimum of 28 days prior to application of sealer.

2. Surface is completely free of sealers, oils, dirt, paint, alkali, penetrating sealers and foreign materials that would prevent the sealer from penetrating the concrete surface.

3. Concrete has been swept clean.

4. Test area has been approved.

3.2 APPLICATION

A. Concrete Sealer: Strictly comply with manufacturer’s installation recommendations including the following.

1. Apply after stain has dried at rate recommended by manufacturer.

2. Clean surface as recommended by manufacturer.

3. All concrete flatwork designated as being sealed in the plans and specifications shall be sealed with 2-3 even coats of sealer, at the rate of approximately 150 to 200 square feet per gallon.

3.3 CLEANING AND PROTECTION

A. Protection: Do not cover but protect floor area from paint and other contaminates that could inhibit the sealer.

END OF SECTION